Wrench.



A. M. LE PIERRE.

WRENCH.

APPLICATION FILED MAR-20, I915.

Patented July 11.1916.

naumcmu. u. c.

mar

AUGUSTE MARIE LE PIERRE, 0F KORBEL, CALIFORNIA.

WRENCH.

Specification of Letters Patent.

Patented July 11, 1916..

Application filed March 20, 1915. Serial No. 15,827.

To all whom it may concern:

Be it known that l, Aueus'rn M. Ln PIERRE, a citizen of the United States, residing at Korbel, in the county of Humboldt and State of California, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

This invention is for an improved wrench and the principal object of the invention is to provide improved means for slidably connecting the shank of the movable jaw with the stationary jaw and to also so construct the carrying means of the movable jaw that it will also serve as means for rotatably mounting the worm screw used for adjusting the position of the movable jaw.

Another object of the invention is to so construct the wrench that the knuckle or worm screw may be easily removed when desired.

Another object of the invention is to provide a wrench which is so constructed that it may be very easily and cheaply produced, the various parts being so constructed that they may be cast and then finished with slight expense.

This invention is illustrated in the accompanying drawing, wherein Figure l is a view showing the wrench principally in side elevation, parts of the stationary jaw being broken away to show the manner of mounting the sliding jaw and worm screw. Fig. 2 is a rear elevation of the improved wrench. Fig. 3 is a fragmentary perspective view of the stationary jaw. Fig. 4. is an end view. of the worm screw. Fig. 5 is a fragmentary view in front elevation of the movable jaw. Fig. 6 is a view in side elevation showing a modified form of wrench.

The head 10 of the stationary jaw which is provided at one end of the handle 11 is provided with a cutout portion 12 forming the carrying arms 13 and 14-. These carrying arms 13 and 14: are provided with the passageways 15 and 16 through which the shank 17 of the movable jaw. 18 passes and are also provided with the threaded socket 19 and small opening 20 respectively. The shank 17 of the movable jaw is provided with teeth 21 thus forming the rack bar which is engaged by the threads of the worm screw 22. From an inspection of Fig. 1 it will be readily seen that this worm screw 22 is rotatably mounted upon a pin or bolt 23 which pin 23 after passing through the opening 20 of arm 14: passes through the opening 24: of the worm screw and is then screwed into the threaded socket 19. It should be noted that this pin 23 can be very easily removed if desired by engaging the head of the pin with a pair of pliers or with a screw driver in case the head is provided with the usual thread and that although it will be very securely held in place under ordinary circumstances it can be removed without much trouble if it is desired to remove the worm screw. It should also be noted that the arms 13 and 14 serve the double purpose of slidably mounting the shank or rack bar of the stationary jaw and of supporting the worm screw which actuates the movable jaw.

From an inspection of Fig. 6 it will be readily seen that if desired the relative position of the worm screw 22 and shank 17 of the movable jaw 18 may be transposed with the shank 17 fitting against the handle and with the worm screw positioned adjacent the outer end of the arms 13 and 14: where it will be within easy reach of operators thumb thus permitting the movable jaw to be very easily adjusted. It should be further noted that in order to prevent the movable jaw from becoming entirely disconnected from the stationary jaw and worm screw there has been provided a groove 25 in the shank 17 into which a set screw 26 fits, the set screw being threaded through an opening 27 in the arm 14 as shown in Fig. 3. It should be further noted that when the wrench is constructed as shown in Fig. 6 a nut or other article which it is desired to turn may be reached upon either side of the shank 17 which is most convenient and .that therefore When using the wrench it is not necessary to turn the shank in a certain position in order to engage the article.

What is claimed is 1. A wrench including a handle provided at one end with a stationary jaw and with elongated arms extending in spaced relation and provided with passageways positioned in alinement, one of the arms being provided with an unthreaded opening, and the second arm with a threaded socket positioned in alinement with the unthreaded opening, a movable jaw having a gripping head positioned beyond the stationary jaw and having a shank extending through the V alined passageways of said arms and provided'with teeth forming a rack, a turn screw positioned between said arms and hav-- ingits threads engaging the teeth of said shank, and a pivot pin for said turn screw passing through the unthreaded opening of one arm and having a threaded end screwed I into the threaded socket of the second arm to releasably hold said turn screw in place.

2. A wrench including a handle provided at one end with a stationary jaw and with elongatedarms extending in spaced relation -at one side of said handle and provided p with passageways positioned in alinement,

a movable jaw having a grippinghead posi- Copies of this patent may be obtained for overlapping relation to said handle.

In testimony whereof I alfix my signature 1n presence of two witnesses.

AUGUSTE MARIE LE PIERRE. Witnesses:

W. E. CHAMBERLAIN,

F. BRODERICK.

five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

